If it had happened at Farnborough, perhaps the bit of cloud that caused #2 to lose visual on #1 wouldn’t have been there, and there would’ve been no collision at all.
I saw the collision at Fairford and I do not remember seeing any relevant cloud.. The wreckage of one of them did crash near a parked C130. I also witnessed the accident at Farnborough when an Atlantique crashed. That did fall on local infrastructure killing a lorry driver.